Investigation the performance of Dual Systems Moment-Resisting Frame with Steel Plate Shear Wall Subjected to Blast Loading

Nowadays, with the spread of terrorist attacks in many parts of the world, the design approach to abnormal loadings, such as a blast load, has also become noted of design regulations. In recent years, the dual moment-resisting frame system with steel plate shear wall has been used in the design of structures as a load-bearing system and has several advantages such as low construction cost, rapid installation, high energy absorption potential, suitable ductility, Increasing stiffness and decreasing displacement have made the steel plate shear wall as a proper system for retrofing existing structures, so it is necessary to investigate the behavior of this system against blast loads. In this study, moment-resisting frame structures with and without steel plate shear wall (3, 6 and 9-story) were designed in 3D by ETABS software based on code guidelines and then two-dimensional side frame was extracted in order to be analyzed under the effect of blast loading in 2 scenario such as in-plane and out-plane frame with finite element ABAQUS software and finally the possibility of occurrence progressive collapse were investigated and compared. The results of the present study showed that steel plate shear wall dual system has a suitable performance in comparison to moment-resisting frame in the scenario "in-plane blast loading". It restricted the progressive collapse potential while in the scenario "out-of-plane blast loading" because of the blast load wave propagation in steel plate shear wall, then the moment frame has a better performance. Also, according to the Robustness Index (RI) comparison, with regarding to the in-plane and out-of-plane blast loadings, the steel plate shear wall and moment-resisting frame structures had the best performance, respectively.